On Thu, 2005-03-10 at 10:57 -0800, Nate Edel wrote: > From: "Arjan van de Ven" <[EMAIL PROTECTED]> > To: "Jason Luo" <[EMAIL PROTECTED]> > >> A data acquisition card. In DMA mode, the card need 200M contiguous > >> memory for DMA. > > > > (or want to reserve memory at the boot commandline and then do really > > really evil hacks) > > Such as booting the machine with "mem=(real memory - 200)M" and then > just doing an ioremap of the top 200M of memory. > > It's not the most elegant way of doing things given that it requires > user intervention at boot time, but I'm not sure it counts as a "really > evil hack."
it really gets evil if your machine has > 4Gb of ram... then things really go weird with this. - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [EMAIL PROTECTED] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
